where you do your post you've got your bold, italic, stuff like that. There's a button that looks like a postcard with a mountain in it. You can use that.
Or you can surround the "direct" image link with image tags
[IMG]link[/IMG]
EXAMPLE:
[IMG]http://i174.photobucket.com/albums/w.../clownfish.jpg[/IMG]
would show:
nice tank btw
